{"id":357236,"date":"2024-03-15T09:52:08","date_gmt":"2024-03-15T09:52:08","guid":{"rendered":"\/forum\/forums\/topic\/matrix27-in-harmonic-analysis-workbench\/"},"modified":"2024-03-15T09:52:08","modified_gmt":"2024-03-15T09:52:08","slug":"matrix27-in-harmonic-analysis-workbench","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/matrix27-in-harmonic-analysis-workbench\/","title":{"rendered":"Matrix27 in harmonic analysis workbench"},"content":{"rendered":"<p>I tried to use matrix27 as spring element and I changed the spring joint in workbench to Matrix27 by the code below (element type 4 is spring joint element)<\/p>\n<p>\/PREP7<br \/>et,200,MATRIX27<br \/>KEYOPT,200,2,2<br \/>KEYOPT,200,3,4<br \/>KEYOPT,200,4,1<br \/>R,200,34411799,136089343,0,0,0,0,<br \/>RMORE,-34411799,-136089343,0,0,0,0,<br \/>RMORE,232106005,424813159,0,0,0,0,<br \/>RMORE,-232106005,-424813159,0,0,0,0,<br \/>RMORE,0,0,0,0,0,0,<br \/>RMORE,0,0,0,0,0,0,<br \/>RMORE,0,0,0,0,0,0,<br \/>RMORE,0,0,0,0,0,0,<br \/>RMORE,0,0,0,0,0,0,<br \/>RMORE,0,0,0,0,0,0,<br \/>RMORE,0,0,0,0,0,0,<br \/>RMORE,0,0,0,0,0,0,<br \/>RMORE,-34411799,-136089343,0,0,0,0,<br \/>RMORE,34411799,136089343,0,0,0,0,<br \/>RMORE,-232106005,-424813159,0,0,0,0,<br \/>RMORE,232106005,424813159,0,0,0,0,<br \/>RMORE,0,0,0,0,0,0,<br \/>RMORE,0,0,0,0,0,0,<br \/>RMORE,0,0,0,0,0,0,<br \/>RMORE,0,0,0,0,0,0,<br \/>RMORE,0,0,0,0,0,0,<br \/>RMORE,0,0,0,0,0,0,<br \/>RMORE,0,0,0,0,0,0,<br \/>RMORE,0,0,0,0,0,0,<br \/>esel,s,type,,4<br \/>emodif,all,type,200<br \/>ALLSEL<br \/>\/SOLU<\/p>\n<p>This is simple spring and mass system. The point mass attached to small 2D plane strain area at which the MATRIX27 also connected and MATRIX27 connected to 2D plane strain square area where it was subjected to displacement excitation.<\/p>\n<p><strong><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2024\/03\/15-03-2024-1710496002-mceclip0.png\"><\/strong><\/p>\n<p>and the result of harmonic response is zero for the entire range of the frequency for both the x and y direction. I would like to know how to fix this.<\/p>\n<p>&nbsp;<\/p>\n<p>Thanks.<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"template":"","class_list":["post-357236","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["78684","23687"],"_bbp_author_ip":["96.7.218.215"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["222"],"_bbp_topic_status":["unanswered"],"_bbp_topic_id":["357236"],"_bbp_forum_id":["27790"],"_bbp_engagement":["23687","78684"],"_bbp_voice_count":["2"],"_bbp_reply_count":["2"],"_bbp_last_reply_id":["357728"],"_bbp_last_active_id":["357728"],"_bbp_last_active_time":["2024-03-18 19:03:16"]},"test":"purinut-lersnimitthumcern-ch"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/357236","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics"}],"about":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/types\/topic"}],"version-history":[{"count":0,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/357236\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=357236"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}